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6 Result(s)

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  1. No Access

    Article

    Sequence and transcriptional analysis of the genes responsible for curdlan biosynthesis in Agrobacterium sp. ATCC 31749 under simulated dissolved oxygen gradients conditions

    Expression at the mRNA level of ten selected genes in Agrobacterium sp. ATCC 31749 under various dissolved oxygen (DO) levels during curdlan fermentation related to electron transfer chain (ETC), tricarboxylic ac...

    Hong-Tao Zhang, **ao-Bei Zhan, Zhi-Yong Zheng… in Applied Microbiology and Biotechnology (2011)

  2. No Access

    Article

    Recent advances in curdlan biosynthesis, biotechnological production, and applications

    Curdlan is a water-insoluble β-(1,3)-glucan produced by Agrobacterium species under nitrogen-limited condition. Its heat-induced gelling properties render curdlan to be very useful in the food industry initially....

    **ao-Bei Zhan, Chi-Chung Lin, Hong-Tao Zhang in Applied Microbiology and Biotechnology (2012)

  3. No Access

    Article

    Improved curdlan fermentation process based on optimization of dissolved oxygen combined with pH control and metabolic characterization of Agrobacterium sp. ATCC 31749

    A significant problem in scale-down cultures, rarely studied for metabolic characterization and curdlan-producing Agrobacterium sp. ATCC 31749, is the presence of dissolved oxygen (DO) gradients combined with pH ...

    Hong-Tao Zhang, **ao-Bei Zhan, Zhi-Yong Zheng… in Applied Microbiology and Biotechnology (2012)

  4. No Access

    Article

    Improvement of specific growth rate of Pichia pastoris for effective porcine interferon-α production with an on-line model-based glycerol feeding strategy

    Effective expression of porcine interferon-α (pIFN-α) with recombinant Pichia pastoris was conducted in a bench-scale fermentor. The influence of the glycerol feeding strategy on the specific growth rate and prot...

    Min-Jie Gao, Zhi-Yong Zheng, Jian-Rong Wu… in Applied Microbiology and Biotechnology (2012)

  5. No Access

    Article

    A new polysialic acid production process based on dual-stage pH control and fed-batch fermentation for higher yield and resulting high molecular weight product

    To determine the factors influencing the resulting molecular weight of polysialic acid (PSA), batch fermentations by using Escherichia coli were conducted. It was found that temperature and pH were significant fa...

    Zhi-Yong Zheng, Shun-Zhi Wang, Guo-Shun Li… in Applied Microbiology and Biotechnology (2013)

  6. No Access

    Article

    A new effective process for production of curdlan oligosaccharides based on alkali-neutralization treatment and acid hydrolysis of curdlan particles in water suspension

    Biologically active β-1,3-oligosaccharides with rapidly growing biomedical applications are produced from hydrolysis of curdlan polysaccharide. The water-insoluble curdlan impedes its hydrolysis efficiency whi...

    **g Li, Li Zhu, Zhi-Yong Zheng, **ao-Bei Zhan… in Applied Microbiology and Biotechnology (2013)